Sinogastromyzon nantaiensis is a species of hillstream loach (a ray-finned fish) in the genus Sinogastromyzon.

It is endemic to Taiwan.

It is found in the Kaoping and Tsengwen River basins in the southern Taiwan.

[1] Its maximum length is 8 cm (3.1 in).

This Balitoridae-related article is a stub.